VATquarter: OSS & IOSS Reports

Selling into the EU means filing an OSS return every quarter (or IOSS every month) with VAT split by destination country and rate. Shopify has no report for that. VATquarter reads your orders and refunds, groups the VAT already charged by Member State of consumption and rate, splits it by dispatch country, converts to euros at the ECB rate the rules require, lists refunds of earlier periods as corrections, and exports CSV or XLSX your accountant can file from. It prepares; you file.